Vintage professional build quality scope. This is a dual channel with time delay for the more experienced demanding user . High quality components inside. Very reliable for long term. See pictures for details. Signs of use on the housing. back light grid works Tested and both channels work. Carefully shipped The PM 3240 Portable h.f. oscilloscope enables the measurement of signals at a high sensitivity (5mV/DIV) over a large bandwidth (50MHz). There is a wide choice of display possibilities, such as one channel, two channels alternately or chopped, two channels added, with nomal and inverted position for one input signal, and a main and delayed time-base. The PM 3240 oscilloscope features a tapless power supply with low dissipation. This power supply works on any AC mains volatge between 90 V and 264 V, or any DC Voltage between 100V and 350 V, thus obviating the need of adjusting the instrument to the local mains voltage. All these features make the oscilloscope suitable for a wide variety of applications. • Bandwidth: 50 MHz • Analog Channels: 2 • Operating System: Embedded • Form Factor: Benchtop Alternating Current supply (AC) / 100-240 Volt Loudspeaker - - No sound reproduction output. Material Metal case Model: Dual-Trace Oscilloscope 50 MHz PM3240 - Philips; Eindhoven tubes Shape Tablemodel, with any shape - general. Dimensions (WHD) 316 x 154 x 410 mm / 12.4 x 6.1 x 16.1 inch Net weight (2.2 lb = 1 kg) 8.4 kg / 18 lb 8 oz (18.502 lb)